body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 40px;
    background-color: #f4f4f4;
    color: #333;
}

h1 {
    font-size: 28px;
    margin-bottom: 20px;
}

h2 {
    font-size: 22px;
    margin-top: 30px;
    margin-bottom: 10px;
    border-bottom: 2px solid #ccc;
    padding-bottom: 5px;
}

#user-info, #password-change, #login-history {
    background: #fff;
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

input[type="text"],
input[type="password"] {
    padding: 10px;
    width: 100%;
    margin-bottom: 10px;
    border-radius: 4px;
    border: 1px solid #ccc;
    box-sizing: border-box;
}

button {
    padding: 10px 16px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: #fff;
}

table th, table td {
    padding: 10px;
    border: 1px solid #ccc;
    text-align: left;
}

table th {
    background-color: #f0f0f0;
}
